Online problems

OK so I was playing Call of Duty Black Ops online and all of a sudden, the game stops and there is a buzzing noise coming out of my TV. I was playing Team Deathmatch (on Nuketown I believe) and i turned off my Wii and went back on. I decided to try a Wager Match and I played for a good hour. I then decided to try TDM again and it did the same thing. I have not tried Zombies online mainly because I do not want to play it until I have a headset and I don't like playing with noobs. I am using a DVD+R (I know it is bad but it is only until I get an external HDD) with NeoGamma IOS249 Rev20. If you could help it would be greatly appreciated.